/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.accumulo.core.client;

/**
 * The value for the durability of a BatchWriter or ConditionalWriter.
 *
 * @since 1.7.0
 */
public enum Durability {
  // Note, the order of these is important; the "highest" Durability is used in group commits.
  /**
   * Use the durability as specified by the table or system configuration.
   */
  DEFAULT,
  /**
   * Don't bother writing mutations to the write-ahead log.
   */
  NONE,
  /**
   * Write mutations the the write-ahead log. Data may be sitting the the servers output buffers,
   * and not replicated anywhere.
   */
  LOG,
  /**
   * Write mutations to the write-ahead log, and ensure the data is stored on remote servers, but
   * perhaps not on persistent storage.
   */
  FLUSH,
  /**
   * Write mutations to the write-ahead log, and ensure the data is saved to persistent storage.
   */
  SYNC
}
